Substances that load up with D.
Posted: Wed Nov 30, 2011 1:59 pm
Doug, in another thread you have posted;
Some questions on this;
1) If D has problems loading into Ti if exposed to these gases first, then is that true for any piece of Ti (or is it just very thin sputtered layers)?
2) If Ti can get contamination easily by exposure to the atmosphere then a) is there a means to rid a piece of Ti after it is installed in a vaccum (viz. would a long bombardment period not undo any such exposure effects) and/or b) is there another material (you mention Zr) whose D-adsorbing behaviour is not degraded following atmospheric exposure?
3) I find it interesting that these materials are [I think?] also the same ones that have the least secondary electron/sputtering rates. Is this co-indicence?
The books also mention Zr, which I've got and should be relatively easy to sputter. In the Ti case, the issue is prep of the Ti and doing it in an atmosphere really free of O and N and COx - so you'd have to ship it to me in argon or something, else it will refuse to accept any D (or that other isotope).
Some questions on this;
1) If D has problems loading into Ti if exposed to these gases first, then is that true for any piece of Ti (or is it just very thin sputtered layers)?
2) If Ti can get contamination easily by exposure to the atmosphere then a) is there a means to rid a piece of Ti after it is installed in a vaccum (viz. would a long bombardment period not undo any such exposure effects) and/or b) is there another material (you mention Zr) whose D-adsorbing behaviour is not degraded following atmospheric exposure?
3) I find it interesting that these materials are [I think?] also the same ones that have the least secondary electron/sputtering rates. Is this co-indicence?